It isn’t clear what started the dispute, who was involved, how the victim was related to the arrested man, what was the extent of the victim’s injuries or what prompted police to bring the misdemeanor-level charges. Police withheld further information, classifying the incident as a domestic matter.

Under state law, a person is guilty of assault in the third degree when: (1) With intent to cause physical injury to another person, he causes such injury to such person or to a third person; or (2) he recklessly causes serious physical injury to another person; or (3) with criminal negligence, he causes physical injury to another person by means of a deadly weapon, a dangerous instrument or an electronic defense weapon.

The man turned himself in to New Canaan Police at about 8:37 a.m. on Feb. 28. Police released the man on $5,000 bond and scheduled him to appear the same day in state Superior Court in Norwalk.